Manual sealing device for helium detection of vacuum box

Abstract

The utility model discloses a manual sealing device for vacuum box helium detection, and relates to the technical field of vacuum box helium detection. The device comprises a helium detection device, one side of the top end of the helium detection device is fixedly connected with a gas outlet pipe, a connecting pipe is arranged above the gas outlet pipe, and the gas outlet pipe and the connecting pipe are connected through a clamping mechanism. A fixing pipe at the bottom end of a first flange is movably inserted into the top of an air outlet pipe, a fixing frame corresponds to one end of an arc-shaped rod in position, and by rotating the fixing frame along the outer side of the arc-shaped rod, when the first flange rotates till a clamping block corresponds to a clamping groove in position, the clamping block is movably inserted into the clamping groove under the elastic force action of a spring; the relative rotation of the first flange and the second flange is limited through the cooperation between the fixing frame and the arc-shaped rod, and the separated operation of the first flange and the second flange is limited, so that the connection operation of the connecting pipe and the gas outlet pipe is realized, the mounting and dismounting are convenient and fast, and the helium detection efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum box helium detection technical field, specifically is a manual sealing device for vacuum box helium detection. BACKGROUND

[0002] In industrial production and scientific research experiment, vacuum box helium detection technology is widely used in detecting the tiny leakage of various equipment, components or pipeline systems. Based on the extremely high permeability and low molecular weight characteristics of helium, the technology fills helium in the inside of the measured piece, and uses high sensitivity helium detector outside to detect any possible leakage point, so as to realize accurate evaluation of sealing performance. Especially in the high-tech fields such as aerospace, semiconductor manufacturing, nuclear industry, the requirement for sealing performance is extremely strict, and vacuum box helium detection technology has become an indispensable quality control means.

[0003] However, the traditional detection connects through the flange connection or threaded connection mode when connecting the pipelines, which is complicated, long in assembly time and difficult to guarantee the sealing reliability, thereby reducing the vacuum box helium detection efficiency. In view of the above problems, the inventor puts forward a manual sealing device for vacuum box helium detection to solve the above problems. UTILITY MODEL CONTENT

[0004] In order to solve the problem of complex operation of pipeline connection, the utility model aims at providing a manual sealing device for vacuum box helium detection.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: a manual sealing device for vacuum box helium detection, comprising a helium detection equipment, the top end of the helium detection equipment is fixedly connected with an air outlet pipe, a connecting pipe is arranged above the air outlet pipe, the air outlet pipe and the connecting pipe are connected through a clamping mechanism;

[0006] The clamping mechanism comprises a flange one and a flange two, the flange one and the flange two are fixedly connected on the opposite sides of the connecting pipe and the air outlet pipe respectively, the side surface of the flange one is fixedly connected with two fixed frames which are centrally symmetrically distributed, the side surface of the flange two is fixedly connected with two arc-shaped rods which are centrally symmetrically distributed, the arc-shaped rod presents a progressive thickening trend from one end to the other end, a sliding groove is formed in one side of the flange one, a clamping block is slidably connected in the sliding groove, a clamping groove is formed in one side of the flange two, the bottom end of the clamping block is movably inserted into the clamping groove, a spring is fixedly connected between the top surface of the clamping block and the inner wall of the sliding groove, an unlocking plate is fixedly connected on one side of the clamping block, which facilitates the unlocking operation of the clamping block.

[0007] Preferably, the bottom end of the flange one is fixedly connected with a fixed pipe communicated with the connecting pipe, the top of the gas outlet pipe is fixedly connected with an annular plate, the top of the annular plate is fixedly connected with a sealing ring two, and the bottom end of the fixed pipe is movably inserted into the gas outlet pipe and abuts against the sealing ring two.

[0008] Preferably, the opposite sides of the flange one and the flange two are both provided with a sealing groove, and the sealing groove is provided with a sealing ring one.

[0009] Preferably, the inner wall of the sliding groove is provided with a limiting groove on both sides, and the clamping block is fixedly connected with a limiting block on both sides, and the limiting block is slidably clamped in the limiting groove.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] 1, the bottom end of the flange one is fixedly connected with a fixed pipe communicated with the connecting pipe, the top of the gas outlet pipe is fixedly connected with an annular plate, the top of the annular plate is fixedly connected with a sealing ring two, and the bottom end of the fixed pipe is movably inserted into the gas outlet pipe and abuts against the sealing ring two.

[0012] 2, by rotating the fixed frame along the outer side of the arc-shaped rod, the fixed frame is guided by the arc-shaped rod, the flange one moves to the side of the flange two during the rotation of the flange one, and then the fixed pipe extrudes the sealing ring two, and the flange one and the flange two extrude the sealing ring one, realizing double sealing, thereby improving the sealing performance of the connection between the gas outlet pipe and the connecting pipe. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0014] Figure 1 It is the overall structure schematic diagram of the utility model.

[0015] Figure 2 It is the local split structure schematic diagram of the utility model.

[0016] Figure 3 It is the utility model Figure 2 The enlarged view of A in the utility model.

[0017] Figure 4 It is a partial sectional view structure schematic diagram of the utility model.

[0018] In the figure: 1, helium detection equipment; 2, gas outlet pipe; 3, connecting pipe; 4, clamping mechanism; 41, flange one; 42, flange two; 43, fixed frame; 44, arc rod; 45, sliding slot; 46, clamping block; 47, clamping groove; 48, unlocking plate; 49, spring; 5, sealing groove; 6, sealing ring one; 7, limiting block; 8, limiting groove; 9, fixed pipe; 10, annular plate; 11, sealing ring two. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0020] Embodiment: as Figures 1-4 shown, the utility model provides a kind of manual sealing device for vacuum box helium detection, including helium detection equipment 1, the top side of helium detection equipment 1 is fixedly connected with gas outlet pipe 2, the upper portion of gas outlet pipe 2 is provided with connecting pipe 3, and gas outlet pipe 2 and connecting pipe 3 are connected by clamping mechanism 4 between them;

[0021] Clamping mechanism 4 includes flange one 41 and flange two 42, and flange one 41 and flange two 42 are fixedly connected to the opposite side of connecting pipe 3 and gas outlet pipe 2 respectively, and two fixed frames 43 with central symmetry distribution radian are fixedly connected to the side surface of flange one 41, two arc rods 44 with central symmetry distribution are fixedly connected to the side surface of flange two 42, one side of flange one 41 is provided with sliding slot 45, clamping block 46 is slidably connected in the inside of sliding slot 45, and one side of flange two 42 is provided with clamping groove 47, and the bottom end of clamping block 46 is movably inserted in clamping groove 47.

[0022] Spring 49 is fixedly connected between the top surface of clamping block 46 and the inner wall of sliding slot 45.

[0023] By adopting the above technical scheme, by setting spring 49, it is convenient to reset clamping block 46, and the insertion between clamping block 46 and clamping groove 47 is more fastened by using the elastic force of spring 49.

[0024] One side of clamping block 46 is fixedly connected with unlocking plate 48, to facilitate the unlocking operation of clamping block 46 by being actuated.

[0025] By adopting the technical scheme, the unlocking plate 48 is arranged, the clamping block 46 is conveniently actuated, and the unlocking operation is completed.

[0026] The bottom end of the flange 41 is fixedly connected with a fixed pipe 9 communicated with the connecting pipe 3, the inner side of the top of the air outlet pipe 2 is fixedly connected with an annular plate 10, the top end of the annular plate 10 is fixedly connected with a sealing ring 11, and the bottom end of the fixed pipe 9 is movably inserted into the inside of the air outlet pipe 2 and abuts against the sealing ring 11.

[0027] By adopting the technical scheme, the fixed pipe 9 and the sealing ring 11 are tightly contacted and sealed, and the sealing performance of the connection between the air outlet pipe 2 and the connecting pipe 3 is improved.

[0028] The opposite sides of the flange 41 and the flange 42 are both provided with a sealing groove 5, and the inside of the sealing groove 5 is provided with a sealing ring 6.

[0029] By adopting the technical scheme, the sealing groove 5 is arranged, the contact surface between the flange 41 and the flange 42 is sealed, and the sealing performance of the connection between the connecting pipe 3 and the air outlet pipe 2 is further improved.

[0030] The inside walls of the sliding groove 45 are both provided with a limiting groove 8, and the two sides of the clamping block 46 are both fixedly connected with a limiting block 7, and the limiting block 7 is slidingly connected in the limiting groove 8.

[0031] By adopting the technical scheme, the limiting block 7 and the limiting groove 8 are matched, the movement of the clamping block 46 is limited, and the clamping block 46 is prevented from sliding out of the inside of the sliding groove 45.

[0032] The arc-shaped rod 44 is gradually thickened from one end to the other end.

[0033] By adopting the technical scheme, the arc-shaped rod 44 is gradually thickened from one end to the other end, when the flange 41 is rotated, the arc-shaped rod 44 is used for guiding the fixed frame 43, and the flange 41 is moved to the side of the flange 42 during the rotation of the flange 41.

[0034] Working principle: when the vacuum box helium detection is carried out to the connection between the pipes, the bottom end of the flange 41 is fixed to the pipe 9, the top of the gas outlet pipe 2 is inserted, and the fixed frame 43 is positioned corresponding to one end of the arc-shaped rod 44. By rotating the fixed frame 43 along the outside of the arc-shaped rod 44, the arc-shaped rod 44 guides the fixed frame 43. During the rotation of the flange 41, the flange 41 moves to one side of the flange 42, so that the fixed pipe 9 extrudes the sealing ring 11, and the flange 41 and the flange 42 extrude the sealing ring 6, thereby improving the sealing performance of the connection between the gas outlet pipe 2 and the connecting pipe 3. When the flange 41 is rotated to the position corresponding to the clamping block 46 and the clamping groove 47, the spring 49 is used to push the clamping block 46 to move to one side of the clamping groove 47, so that the clamping block 46 is inserted into the inside of the clamping groove 47, thereby limiting the relative rotation of the flange 41 and the flange 42, and the cooperation between the fixed frame 43 and the arc-shaped rod 44 is used to limit the separation operation of the flange 41 and the flange 42, thereby realizing the connection operation of the connecting pipe 3 and the gas outlet pipe 2.

[0035] When unlocking, only need to pull the unlocking plate 48 upward, drive the clamping block 46 to move along the inside of the sliding groove 45 to one side of the spring 49, and compress the spring 49, so that the bottom end of the clamping block 46 is pulled out from the inside of the clamping groove 47, the restriction of the relative rotation of the flange 41 and the flange 42 is removed, thereby facilitating the disassembly of the gas outlet pipe 2 and the connecting pipe 3.

[0036] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A hand seal for vacuum box helium detection, comprising a helium detection device (1), characterized in that: The top end side of the helium detection equipment (1) is fixedly connected with an air outlet pipe (2), the upper side of the air outlet pipe (2) is provided with a connecting pipe (3), and the air outlet pipe (2) and the connecting pipe (3) are connected through a clamping mechanism (4). The clamping mechanism (4) comprises a flange one (41) and a flange two (42), the flange one (41) and the flange two (42) are fixedly connected on the opposite sides of the connecting pipe (3) and the air outlet pipe (2) respectively, the side surface of the flange one (41) is fixedly connected with two fixed frames (43) which are centrally symmetrically distributed, the side surface of the flange two (42) is fixedly connected with two arc-shaped rods (44) which are centrally symmetrically distributed, one side of the flange one (41) is provided with a sliding groove (45), the clamping block (46) is slidably connected in the sliding groove (45), and the flange two (42) is provided with a clamping groove (47) on one side.

2. A hand seal for a vacuum box helium leak test as claimed in claim 1, wherein, The top surface of the clamping block (46) and the inner wall of the sliding groove (45) are fixedly connected with a spring (49).

3. A hand seal for a vacuum box helium leak test as defined in claim 1, wherein, One side of the clamping block (46) is fixedly connected with an unlocking plate (48), so as to facilitate the unlocking operation of the clamping block (46).

4. A hand seal for a vacuum box helium leak test as defined in claim 1, wherein, The bottom end middle part of the flange one (41) is fixedly connected with a fixed pipe (9) which is communicated with the connecting pipe (3), the inner side of the top of the air outlet pipe (2) is fixedly connected with an annular plate (10), the top end of the annular plate (10) is fixedly connected with a sealing ring two (11), and the bottom end of the fixed pipe (9) is movably inserted into the air outlet pipe (2) and abuts against the sealing ring two (11).

5. A hand seal for a vacuum box helium leak test as defined in claim 1, wherein, The opposite sides of the flange one (41) and the flange two (42) are provided with sealing grooves (5), and the sealing grooves (5) are provided with sealing rings one (6) in the inside.

6. A hand seal for a vacuum box helium leak test as defined in claim 1, wherein, The two sides of the inner wall of the sliding groove (45) are provided with limiting grooves (8), and the two sides of the clamping block (46) are fixedly connected with limiting blocks (7) which are slidably clamped in the limiting grooves (8).

7. A hand seal for a vacuum box helium leak test as defined in claim 1 wherein, The arc-shaped rod (44) gradually thickens from one end to the other end.

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